package gui;

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;

public class RadioButton_2
{

	public static void main (String [] args) {
		Display display = new Display ();
		final Shell shell = new Shell (display);
		shell.setLayout (new FillLayout ());
		Listener listener = new Listener () {
			public void handleEvent (Event e) {
				Control [] children = shell.getChildren ();
				for (int i=0; i<children.length; i++) {
					Control child = children [i];
					if (e.widget != child && child instanceof Button && (child.getStyle () & SWT.TOGGLE) != 0) {
						((Button) child).setSelection (false);
					}
				}
				((Button) e.widget).setSelection (true);
			}
		};
		for (int i=0; i<20; i++) {
			Button button = new Button (shell, SWT.TOGGLE);
			button.setText ("B" + i);
			button.addListener (SWT.Selection, listener);
			if (i == 0) button.setSelection (true);
		}
		shell.pack ();
		shell.open ();
		while (!shell.isDisposed ()) {
			if (!display.readAndDispatch ()) display.sleep ();
		}
		display.dispose ();
	}
}
